I disagree on LB. I arranced for a metallurgical analysis of a frame that split when a 45 case ruptured, and the results were "consistent with specifications of 1141 hot rolled steel with no evidence of fording or heat treating as evidenced by 200x micographic study and nital etching". This is goind back decades. But in fairness to Les, he told the customer (I was in an EMC VPs office listening in on the speaker phone conversaion) he stood by his product and would offer a $50 discount on a new gun, and he would be glad to do a magnaflux analysis on the failed gun but "would have to charge for it". Something about the "And the horse he rode in on" comes to mind. Regretably, I lost report to sloppy backup procedures a couple of decades ago.
Nice equation. Id like to see it expanded to include Atlas, Springfield Prodigy, Staccato and Infinity.